放射技術(shù)（共1000題 1000分）

放射技術(shù)（共1000題

1000分）一、A1/A2型題、A1/A2型題：以下每一道題下面有A、B、C、D、E五個(gè)備選答案。請(qǐng)從中選擇一個(gè)最佳答案，并在答題卡上將相應(yīng)題號(hào)的相應(yīng)字母所屬的方框涂黑。（800分）MACROBUTTONDoFieldClick[修改]MACROBUTTONDoFieldClick[]（）1、關(guān)于M=1+b/a敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.M表示放大率B.a表示肢片距C.b表示焦片距D.影像放大對(duì)像質(zhì)的影響大于變形E.放大對(duì)成像是有害的（）2、國(guó)際放射學(xué)界公認(rèn)的半影模糊閾值是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.0.2mmB.0.25mmC.0.3mmD.0.5mmE.0.05mm（）3、已知所允許的放大率為1.2，則焦點(diǎn)為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.1B.2C.3D.4E.5（）4、放大攝影X線管焦點(diǎn)應(yīng)等于或小于MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.0.01B.0.05C.0.1D.0.3E.0.5（）5、放大攝影能將細(xì)小結(jié)構(gòu)顯示清楚，其原因是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.空氣濾過(guò)散射少B.照射野小，清楚度高C.將高頻信號(hào)轉(zhuǎn)換成低頻信號(hào)D.焦點(diǎn)面積變小E.模糊閾值變大（）6、關(guān)于散射線，敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.隨管電壓增大而加大B.與被照體厚度有關(guān)C.照射野大，散射線多D.主要來(lái)源于康普頓效應(yīng)E.對(duì)照片密度對(duì)比度無(wú)影響（）7、關(guān)于散射線的敘述，正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線波長(zhǎng)越長(zhǎng)，產(chǎn)生散射線越多B.X線強(qiáng)度越小，產(chǎn)生散射線越多C.物體受照面越大，產(chǎn)生散射線越多D.物體越薄，產(chǎn)生散射線越多E.散射線使照片對(duì)比度增大（）8、有關(guān)X線束、照射野的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線球管發(fā)射錐形X線束B(niǎo).X線束入射被照體曝光面的大小稱照射野C.攝影時(shí)照射野應(yīng)盡量大D.攝影中的X線束有一定的穿透能力E.X線束中心部分的X線為中心線（）9、下列物質(zhì)可用做濾線柵板填充物的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.鎢B.鋁C.鋅D.銅E.鐵（）10、關(guān)于濾線柵使用注意事項(xiàng)的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.將濾線柵置于焦點(diǎn)和被照體之間B.焦點(diǎn)到濾線柵的距離與柵焦距相等C.X線中心線對(duì)準(zhǔn)濾線柵的中心D.原射線投射方向與濾線柵鉛條排列間隙平行E.原發(fā)X線與濾線柵鉛條平行（）11、濾線柵攝影中照片上密度出現(xiàn)一邊高一邊低，原因可能是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.濾線柵反置B.側(cè)向傾斜C.上柵焦距偏離D.雙重偏離E.下柵焦距偏離（）12、濾線柵攝影中照片影像中心呈現(xiàn)一定密度，兩側(cè)無(wú)密度，原因可能是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.濾線柵反置B.側(cè)向傾斜C.上柵焦距偏離D.雙重偏離E.下柵焦距偏離（）13、同一部位，放大攝影條件與常規(guī)相比，敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.兩者條件相同B.需降低曝光量C.需增加曝光量D.很難確定增和減E.兩者必須使用同種增感屏（）14、通過(guò)對(duì)線對(duì)測(cè)試卡的攝影，可以測(cè)量MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.密度B.光暈C.灰霧度D.感光度E.分辨率（）15、照片影像僅在某一部分出現(xiàn)模糊，可能性最大的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.檢查床顫動(dòng)B.暗盒漏光C.屏-片接觸不良D.患者移動(dòng)E.攝影時(shí)間長(zhǎng)（）16、照片影像僅在某一部分出現(xiàn)模糊，原因可能是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.攝影時(shí)間過(guò)長(zhǎng)B.攝影時(shí)暗盒移動(dòng)C.攝影時(shí)肢體移動(dòng)D.屏／片接觸不良E.攝影時(shí)球管震動(dòng)（）17、關(guān)于照片斑點(diǎn)，下列說(shuō)法錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.斑點(diǎn)多可使影像模糊B.鹵化銀可形成膠片斑點(diǎn)C.可有屏結(jié)構(gòu)斑點(diǎn)和量子斑點(diǎn)D.X線量子越少，量子斑點(diǎn)越多E.照片斑點(diǎn)可經(jīng)定影消除（）18、關(guān)于照片斑點(diǎn)，下列說(shuō)法正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.量子斑點(diǎn)比例較小B.膠片顆粒性為主C.增感屏顆粒性無(wú)影響D.增加mAs可減少斑點(diǎn)E.膠片對(duì)比度無(wú)影響（）19、X線攝影中表示X線"量"的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.半價(jià)層B.靶物質(zhì)C.kVD.mAsE.整流波形（）20、關(guān)于高千伏攝影的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.影像顯示層次豐富B.形成的對(duì)比度較低C.光電效應(yīng)的幾率增加D.康普頓效應(yīng)為主E.骨與肌肉的對(duì)比度指數(shù)下降（）21、關(guān)于連續(xù)X線光子能量的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線是混合能譜B.能量大X線波長(zhǎng)長(zhǎng)C.能量決定于電子的能量D.能量決定于核電荷數(shù)E.能量決定于電子接近核的情況（）22、在X線攝影中，光電效應(yīng)的負(fù)面影響是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.產(chǎn)生灰霧B.產(chǎn)生散射C.增加X(jué)線對(duì)比度D.使病人接受的照射量多E.以上四項(xiàng)都是（）23、入射光子能量恰好等于原子軌道的結(jié)合能時(shí)，光電效應(yīng)的發(fā)生幾率發(fā)生下列哪種變化MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.突然減少B.突然增大C.變?yōu)榱鉊.變?yōu)?0%E.無(wú)變化（）24、關(guān)于X線本質(zhì)的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線波長(zhǎng)比可見(jiàn)光波長(zhǎng)長(zhǎng)B.X線是微粒輻射C.X線是電磁輻射D.有波、粒二象性E.X線是一種能（）25、關(guān)于高千伏攝影敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.可獲得低對(duì)比照片B.可延長(zhǎng)球管壽命C.散射線多D.利于病人防護(hù)E.降低照片清晰度（）26、增加窗口濾過(guò)板的厚度，對(duì)X線質(zhì)產(chǎn)生的影響是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.變軟B.變硬C.能譜變寬D.平均能量減小E.無(wú)變化（）27、關(guān)于體層攝影，下列說(shuō)法正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.人體不動(dòng)，X線管、膠片反向運(yùn)動(dòng)B.X線管不動(dòng)，人體、膠片反向運(yùn)動(dòng)C.膠片不動(dòng)，X線管、人體同向運(yùn)動(dòng)D.人體不動(dòng)，X線管、膠片同向運(yùn)動(dòng)E.膠片不動(dòng)，X線管、人體反向運(yùn)動(dòng)（）28、軟組織攝影用X線管陽(yáng)極的靶面材料是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.鎢B.鐵C.金D.鋁E.鉬（）29、乳腺攝影技術(shù)的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.采用低電壓攝影B.常規(guī)攝取軸位及側(cè)斜位C.使用雙面增感屏D.應(yīng)對(duì)乳腺施加壓迫E.選用高分辨率膠片（）30、關(guān)于焦點(diǎn)方位特性的敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.近陽(yáng)極端大B.近陰極端大C.兩極等大D.呈單峰分布E.呈現(xiàn)雙峰（）31、關(guān)于照射野敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.照射野大小對(duì)照片密度無(wú)影響B(tài).可用遮線器控制C.照射野大可增加照片灰霧D.照射野應(yīng)略大于或等于被檢部位E.照射野邊緣應(yīng)限制在所用膠片大小范圍內(nèi)（）32、關(guān)于中心線敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.中心線是攝影方向的表示B.斜射線能正確反映被照體狀況C.中心線一般通過(guò)被攝部位邊緣D.可分為陽(yáng)極中心線和陰極中心線E.從球管發(fā)出的射線都是中心線（）33、臨床上常用"X線硬度"表示MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線量B.X線質(zhì)C.曝光量D.管電壓E.管電流（）34、有關(guān)感光效應(yīng)敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.與管電流成正比B.與管電壓的n次方成正比C.與攝影距離成反比D.與攝影時(shí)間成正比E.與濾線柵的曝光倍數(shù)成反比（）35、有關(guān)感光效應(yīng)敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.感光效應(yīng)與管電流成正比B.感光效應(yīng)與管電壓的n次方成正比C.感光效應(yīng)與攝影距離的平方成反比D.感光應(yīng)用與攝影時(shí)間成正比E.感光效應(yīng)與濾線柵的曝光倍數(shù)成正比（）36、X線屏片成像中，作為信息載體的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.被照體B.X線C.增感屏D.暗盒E.明膠（）37、關(guān)于膠片的保存與管理，敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.標(biāo)準(zhǔn)儲(chǔ)存條件為5～10℃B.片盒應(yīng)水平放置C.標(biāo)準(zhǔn)儲(chǔ)存濕度為30%～40%D.有效期一般為出廠后18個(gè)月E.冷藏的膠片可直接使用（）38、醫(yī)用感藍(lán)X線膠片的吸收光譜峰值為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.420nmB.390nmC.710nmD.550nmE.1000nm（）39、下列不能用于感光材料的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.AgClB.AgBrC.AgID.AgFE.AgBr+AgI（）40、傳統(tǒng)顆粒膠片的感光材料為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.AgClB.AgBrC.AgID.AgFE.AgBr+AgI（）41、扁平顆粒膠片的感光材料為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.AgClB.AgBrC.AgID.AgFE.AgBr+AgI（）42、關(guān)于膠片顆粒敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.晶體顆粒大感光度低B.晶體顆粒分布均勻?qū)Ρ榷鹊虲.晶體顆粒大小不一寬容度大D.晶體顆粒小分辨力低E.晶體顆粒分布均勻顆粒性差（）43、X線膠片鹵化銀顆粒平均大小為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.1.0mmB.1.0μmC.1.71μmD.1.71mmE.2.8μm（）44、關(guān)于膠片乳劑層敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.主要由鹵化銀和明膠組成B.鹵化銀是產(chǎn)生影像的核心C.鹵化銀顆粒的平均直徑約1μmD.明膠能提高乳劑的感光度E.明膠是一種吸鹵劑（）45、關(guān)于明膠敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.明膠是一種吸鹵劑B.明膠不參與堅(jiān)膜作用C.明膠是一種保護(hù)性膠體D.明膠膨脹后有多孔性E.明膠最大缺點(diǎn)是不穩(wěn)定（）46、聚酯片基的特點(diǎn)敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.熔點(diǎn)高B.熱穩(wěn)定性好C.化學(xué)穩(wěn)定性低D.收縮性低E.彈性高（）47、關(guān)于高溫快顯膠片的特點(diǎn)錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.低銀薄層B.不需防靜電劑C.需加入較多附加劑D.175μm厚E.聚酯片基（）48、感光材料未經(jīng)曝光，直接顯影后產(chǎn)生的密度為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.灰霧度B.本底灰霧C.最大密度D.片基灰霧E.乳劑灰霧（）49、下列敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.感光材料未經(jīng)曝光直接顯影后產(chǎn)生的密度為片基灰霧B.感光材料未經(jīng)顯影直接定影后產(chǎn)生的密度為最小密度C.乳劑灰霧和片基灰霧合成本底灰霧D.片基灰霧不能直接測(cè)量E.乳劑灰霧可直接測(cè)量（）50、醫(yī)用膠片產(chǎn)生密度1．0所需曝光量的倒數(shù)為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.感光度B.寬容度C.相對(duì)感度D.灰霧度E.對(duì)比度（）51、照片影像的對(duì)比度與射線對(duì)比度的比為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.感光度B.相對(duì)感度C.平均斜率D.反差系數(shù)E.寬容度（）52、物質(zhì)在射線激發(fā)下將吸收的能量以可見(jiàn)光形式釋放稱為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.發(fā)射現(xiàn)象B.熒光現(xiàn)象C.感光現(xiàn)象D.吸收現(xiàn)象E.衰變現(xiàn)象（）53、關(guān)于增感屏敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.鎢酸鈣屏熒光轉(zhuǎn)換效率高B.稀土屏只能與感藍(lán)膠片配合使用C.稀土屏的發(fā)光效率高于鎢酸鈣屏D.鎢酸鈣屏的發(fā)射光譜為420nmE.稀土屏的發(fā)射光譜為560nm（）54、感藍(lán)膠片的敏感光譜的峰值在MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.220nmB.320nmC.420nmD.520nmE.620nm（）55、關(guān)于膠片特性曲線的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.是描繪曝光量與所產(chǎn)生密度之間關(guān)系的一條曲線B.曲線可以表示出感光材料的感光特性C.特性曲線也稱H-D曲線D.曲線的橫坐標(biāo)為曝光量，縱坐標(biāo)為密度E.曲線的橫坐標(biāo)為密度，縱坐標(biāo)為曝光量（）56、增感屏的結(jié)構(gòu)中不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.熒光體層B.保護(hù)層C.片基層D.反射層E.基層（）57、增加下列因素不會(huì)加大增感屏光擴(kuò)散的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.熒光體顆粒B.熒光體涂布厚度C.保護(hù)層厚度D.反射層的反射效率E.顯影液的濃度（）58、關(guān)于增感屏的結(jié)構(gòu)敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.包括基層B.包括保護(hù)層C.包括乳劑層D.包括熒光體層E.包括反射層或吸收層（）59、關(guān)于熒光體的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.熒光體分為單純型和賦活型B.稀土增感屏的熒光體是單純型C.賦活型由母體、賦活劑和融劑組成D.母體是熒光體具有某種特性的基礎(chǔ)E.融劑有增加發(fā)光效率的作用（）60、形成潛影的先決條件是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.晶體位錯(cuò)B.晶體點(diǎn)陣缺陷C.光量子被鹵化銀吸收D.自發(fā)還原E.晶體物理結(jié)構(gòu)的不完整性（）61、下列組合，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.明礬--堅(jiān)膜B.醋酸--顯影停止劑C.溴化鉀--定影保護(hù)劑D.亞硫酸鈉--防止海波分析出硫E.硫代硫酸鈉--定影劑（）62、對(duì)潛影不起決定作用的因素是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.被照體的原子序數(shù)B.被照體的厚度C.被照體的形狀D.X線的質(zhì)與量E.X線的散射線（）63、顯影液中促進(jìn)劑的作用是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.維持顯影液中pH相對(duì)穩(wěn)定B.防止污染C.微粒顯影D.避免顯影液氧化E.促進(jìn)堅(jiān)膜過(guò)程（）64、在下列化學(xué)藥品中，哪種是顯影液和定影液的共用藥品MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.NaSOB.KBrC.NaSOD.NaCOE.KSOHO（）65、水洗的主要目的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.洗去附著于照片上的污物B.中和殘留在照片上的酸劑C.洗去定影后殘存在乳劑中的顯影劑及其氧化物D.洗去定影后殘留在乳劑中的硫代硫酸鈉及其絡(luò)合物E.洗滌掉照片上未感光的銀鹽（）66、顯影液長(zhǎng)時(shí)間放置后，顯影能力低下的原因是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.顯影劑含量少B.顯影液被稀釋C.空氣氧化，顯影液疲勞D.顯影液中有機(jī)物的沉積過(guò)多E.保護(hù)劑含量少（）67、與自動(dòng)沖洗照片干燥不良的原因無(wú)直接關(guān)系的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.干燥設(shè)定溫度低B.干燥組件濕度大C.定影液疲勞D.水洗不足E.水洗溫度低于常溫（）68、自動(dòng)沖洗機(jī)顯影溫度的設(shè)定范圍，適宜的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.18～20℃B.20～22℃C.33～35℃D.40～45℃E.45～50℃（）69、沖洗技術(shù)沒(méi)有實(shí)際效果的管理方法是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.啟動(dòng)液添加量的管理B.顯影液pH的管理C.顯影液溫度的管理D.顯影液補(bǔ)充量的管理E.定影液混入的管理（）70、直接轉(zhuǎn)換技術(shù)的DR中應(yīng)用的轉(zhuǎn)換介質(zhì)是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.影像板B.增感屏C.碘化銫D.非晶硒E.非晶硅（）71、256×256形式表示的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.像素B.視野C.矩陣D.像素大小E.視野大?。ǎ?2、當(dāng)視野大小固定時(shí)，下列敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.矩陣越大像素越小B.矩陣越大像素越大C.矩陣變小像素不變D.矩陣越小像素越小E.矩陣越大像素越少（）73、下列敘述正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.像素?cái)?shù)量少則像素尺寸小B.像素越大細(xì)節(jié)越多C.像素越小分辨率越高D.像素越小圖像越大E.像素越大圖像越?。ǎ?4、灰度級(jí)數(shù)與圖像的關(guān)系錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.像素位數(shù)越多灰度級(jí)數(shù)越多B.像素位數(shù)越多圖像細(xì)節(jié)越多C.灰度級(jí)數(shù)越多圖像細(xì)節(jié)越多D.灰度級(jí)數(shù)越少圖像質(zhì)量越高E.灰度級(jí)數(shù)越多越圖像越細(xì)膩（）75、由探測(cè)器接收到的信號(hào)經(jīng)模數(shù)轉(zhuǎn)換后得到的數(shù)據(jù)稱為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.像素B.體素C.原始數(shù)據(jù)D.重建數(shù)據(jù)E.顯示數(shù)據(jù)（）76、X線影像中觀察到的亮度水平隨機(jī)波動(dòng)稱為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.灰霧B.密度C.灰階D.噪聲E.偽影（）77、數(shù)字圖像形成的過(guò)程不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.信息采集B.重建C.量化D.轉(zhuǎn)換E.分割（）78、CR中的噪聲不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線量子噪聲B.光激勵(lì)發(fā)光噪聲C.成像板結(jié)構(gòu)噪聲D.增感屏結(jié)構(gòu)噪聲E.電子噪聲（）79、關(guān)于圖像強(qiáng)化敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.小濾過(guò)核增強(qiáng)高頻成分B.小濾過(guò)核適用于提高影像銳利度C.中等濾過(guò)核易掩蓋某些病變D.較大濾過(guò)核易抑制低對(duì)比物體E.小濾過(guò)核能抑制紋理外觀（）80、IP是表示MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.暗盒B.屏片體系C.成像板D.激光膠片E.增感屏（）81、對(duì)IP的使用敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.IP應(yīng)裝在暗盒內(nèi)使用B.IP潛影消除后可重復(fù)使用C.IP潛影未消時(shí)可重復(fù)讀取D.IP只要不損傷可無(wú)限期使用E.IP外觀酷似增感屏（）82、運(yùn)用一定的數(shù)學(xué)方法將含有人體組織信息的一維數(shù)據(jù)轉(zhuǎn)換為圖像矩陣的過(guò)程稱為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.圖像強(qiáng)化B.圖像重建C.灰度處理D.頻率處理E.均衡處理（）83、通過(guò)對(duì)頻率響應(yīng)的調(diào)節(jié)突出邊緣組織輪廓的處理是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.濾波處理B.均衡處理C.灰度處理D.頻率處理E.強(qiáng)化處理（）84、某成像系統(tǒng)能提供的灰度級(jí)數(shù)為256，其比特?cái)?shù)為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.1B.3C.8D.16E.12（）85、當(dāng)采樣間隔大于采樣點(diǎn)大小時(shí)下列敘述錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.圖像噪聲增加B.圖像模糊增加C.采樣點(diǎn)排列不連續(xù)D.采樣間隔小圖像的像素多E.采樣間隔小于采樣點(diǎn)時(shí)模糊度增加（）86、能改變整幅圖像密度的處理參數(shù)是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.GTB.GAC.GCD.GSE.RN（）87、X線信息影像轉(zhuǎn)換成可見(jiàn)密度影像，轉(zhuǎn)換介質(zhì)不含MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.增感屏-膠片系統(tǒng)B.影像增強(qiáng)器系統(tǒng)C.電影膠片D.觀片燈E.熒光屏（）88、多幅相機(jī)成像膠片不適用于MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.CTB.MRC.CRD.DSAE.ECT（）89、CR經(jīng)X線照射后在影像板存留的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.模擬影像B.數(shù)字影像C.黑白影像D.彩色影像E.電信號(hào)（）90、CR的影像載體是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.FPDB.IPC.CCDD.PSLE.Ⅱ（）91、DR的影像載體是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.FPDB.IPC.CCDD.PSLE.Ⅱ（）92、光激勵(lì)熒光體中，常摻入____以改變熒光體的結(jié)構(gòu)和物理特性MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.AlB.EuC.CuD.TIE.Se（）93、CR成像過(guò)程中，IP將X線轉(zhuǎn)化為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.電信號(hào)B.可見(jiàn)光C.數(shù)字信號(hào)D.高能射線E.銀離子（）94、DICOM在各種設(shè)備間主要傳送的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.電子數(shù)據(jù)B.圖像C.聲音D.視頻信號(hào)E.醫(yī)學(xué)圖像及其信息（）95、CR中光激勵(lì)發(fā)光的波長(zhǎng)為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.100～200nmB.390～490nmC.290～390nmD.200～300nmE.190～290nm（）96、CR中IP的線性范圍是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.1:10B.1:10C.1:10D.1:10E.1:10（）97、FPD的中文全稱為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.影像板B.平板探測(cè)器C.光敏照相機(jī)D.平面回波序列E.直接數(shù)字X線攝影（）98、直接FPD中將射線轉(zhuǎn)化為電信號(hào)的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.非晶硒B(niǎo).非晶硅C.光激勵(lì)熒光體D.光電倍增管E.CCD（）99、非晶硒FPD的優(yōu)點(diǎn)不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.成像環(huán)節(jié)少B.吸收率高C.靈敏度高D.量子檢出效率高E.無(wú)電離輻射（）100、間接FPD的信號(hào)轉(zhuǎn)化過(guò)程是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線-電信號(hào)-數(shù)字圖像B.X線-可見(jiàn)光-電信號(hào)-數(shù)字圖像C.X線-可見(jiàn)光-電信號(hào)-模擬圖像D.X線-電信號(hào)-熒光屏-模擬圖像E.X線-電信號(hào)-熒光屏-數(shù)字圖像（）101、DR相比于CRMACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.成像時(shí)間短B.X線利用效率高C.圖像質(zhì)量好D.系統(tǒng)成本高E.以上都是（）102、多絲正比電離室探測(cè)器是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.直接探測(cè)器B.間接探測(cè)器C.模擬探測(cè)器D.平板探測(cè)器E.動(dòng)態(tài)探測(cè)器（）103、KonicaCR系統(tǒng)照射量1mR時(shí)對(duì)應(yīng)的S值為200，2mR對(duì)應(yīng)的S值是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.400B.200C.100D.50E.10（）104、屏／片系統(tǒng)成像與數(shù)字平板X(qián)線攝影的共同之處是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.圖像存儲(chǔ)B.成像能源C.轉(zhuǎn)換介質(zhì)D.成像方式E.傳輸方式（）105、FPD能夠成為平板形狀，主要是探測(cè)器的單元陣列采用的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.薄膜晶體管技術(shù)B.光敏照相機(jī)技術(shù)C.光電倍增管技術(shù)D.光激勵(lì)發(fā)光技術(shù)E.非晶硒技術(shù)（）106、直接FPD可以由____直接獲得像素位置信息MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.地址編碼電路B.信號(hào)放大電路C.濾波電路D.A/D轉(zhuǎn)換電路E.顯示電路（）107、CR的缺點(diǎn)有MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.常規(guī)X線攝影信息數(shù)字化B.圖像分辨率、顯示力高C.降低X線的輻射量D.時(shí)間、空間分辨力不足E.實(shí)現(xiàn)X線信息的數(shù)字化儲(chǔ)存、再現(xiàn)及傳輸（）108、CR圖像處理不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.灰階處理B.窗位處理C.偽彩處理D.數(shù)字減影處理E.X線吸收率減影處理（）109、直接數(shù)字化X射線攝影，硒物質(zhì)直接轉(zhuǎn)換技術(shù)X射線的吸收率高于間接轉(zhuǎn)換技術(shù)MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.3～4倍B.6～8倍C.5～9倍D.1～2倍E.以上都不是（）110、CR的圖像處理功能，不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.灰階處理B.窗位處理C.時(shí)間減影處理D.能量減影處理E.磁信號(hào)處理（）111、DSA基于MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.數(shù)字熒光成像B.超聲波成像C.斷層成像D.核素成像E.模擬成像（）112、DSA是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線平片系統(tǒng)與計(jì)算機(jī)數(shù)字圖像系統(tǒng)的結(jié)合B.X線電視系統(tǒng)與計(jì)算機(jī)數(shù)字圖像系統(tǒng)的結(jié)合C.X線平片系統(tǒng)與血管造影系統(tǒng)的結(jié)合D.X線電視系統(tǒng)與血管造影系統(tǒng)的結(jié)合E.以上描述均不對(duì)（）113、DSA需要對(duì)兩次采集的圖像進(jìn)行數(shù)字圖像處理中的MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.圖像相加B.圖像相減C.圖像相乘D.圖像相除E.圖像積分（）114、DSA的時(shí)間減影方式中沒(méi)有MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.連續(xù)方式B.脈沖方式C.路標(biāo)方式D.常規(guī)方式E.雙能方式（）115、DSA要使一直徑2mm的血管及其內(nèi)徑1mm的狹窄與一直徑4mm的血管及其內(nèi)徑2mm的狹窄成像一樣清晰，可以MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.將碘濃度加倍B.將曝光量加倍C.將視野加倍D.將矩陣加倍E.將像素大小加倍（）116、IADSA的優(yōu)點(diǎn)不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.造影劑濃度低B.減少了移動(dòng)偽影C.血管交疊少D.便于介入治療E.可全身成像（）117、IVDSA的缺點(diǎn)不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.造影劑到達(dá)興趣區(qū)時(shí)被稀釋嚴(yán)重B.小血管顯示效果不好C.有一定損傷性D.需要高濃度造影劑E.外周靜脈顯示效果差（）118、能量減影成像是使用兩種____進(jìn)行成像MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.不同能量造影劑B.不同能量X線C.不同能量的電流D.不同能量的機(jī)械波E.不同能量的機(jī)器（）119、由Stewart-Hamilton關(guān)系式得到DSA的提示不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.動(dòng)脈內(nèi)碘濃度與對(duì)比劑的碘濃度成正比B.興趣區(qū)血管內(nèi)峰值碘濃度與注射對(duì)比劑的劑量有關(guān)C.心功能差的病人，心輸出量低，而中心血量高D.IVDSA時(shí)，注射位置可行中心或外周注射對(duì)比劑E.IVDSA時(shí)，動(dòng)脈內(nèi)碘濃度取決于所給予的碘注射速率（）120、和中心注射對(duì)比劑相比，外周注射時(shí)碘信號(hào)值大約減少M(fèi)ACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.20%B.40%C.60%D.80%E.100%（）121、碘在____時(shí)，衰減曲線具有銳利的不連續(xù)性，其臨界水平成為K緣。MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.11keVB.22keVC.33keVD.44keVE.55keV（）122、DSA能量減影常使用的兩種管電壓為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.50kV和110kVB.60kV和120kVC.70kV和130kVD.80kV和140kVE.90kV和150Kv（）123、DSA雙能減影時(shí)，后一幀圖像比前一幀圖像的碘信號(hào)大約減少M(fèi)ACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.50%B.60%C.70%D.80%E.90%（）124、DSA雙能減影前首先將130kV狀態(tài)時(shí)采集的影像進(jìn)行____因數(shù)加權(quán)時(shí)，可以很好的消除軟組織和氣體影，留下明顯的碘信號(hào)MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.0.33B.1.33C.2.33D.3.33E.4.33（）125、決定DSA信號(hào)強(qiáng)度的最主要因素是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線管電壓B.X線量C.曝光時(shí)間D.攝影部位E.血管內(nèi)碘濃度（）126、關(guān)于影響DSA對(duì)比劑注射流率的敘述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.與導(dǎo)管長(zhǎng)度成正比B.與導(dǎo)管端相對(duì)于血管的方位有關(guān)C.與對(duì)比劑黏度成反比D.與導(dǎo)管半徑的四次方成正比E.與注射壓力成正比（）127、DSA成像中體位設(shè)計(jì)對(duì)影像質(zhì)量的影響因素有MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.焦點(diǎn)、被照體、檢測(cè)器三者相對(duì)位置B.焦點(diǎn)、被照體、檢測(cè)器三者間距離C.X線管焦點(diǎn)成像質(zhì)量D.病人體位的正確及配合程度E.以上全是（）128、在DSA檢查中，與提高信噪比直接相關(guān)的因素是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.矩陣大小B.X線劑量C.球管焦點(diǎn)D.攝影體位E.采像速率（）129、DSA成像系統(tǒng)中不包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.X線機(jī)B.網(wǎng)絡(luò)服務(wù)器C.圖像采集卡D.圖像檢測(cè)器E.快速圖像處理機(jī)（）130、理想的DSA攝影條件，應(yīng)達(dá)到MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.足夠高的信噪比B.最低的病人照射劑量C.適當(dāng)?shù)腦線管負(fù)荷D.最小的X線脈沖寬度E.以上均應(yīng)達(dá)到（）131、關(guān)于DSA成像的基本原理，哪項(xiàng)描述不正確MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.數(shù)字熒光成像(digitalfluorography，DF)是DSA的基礎(chǔ)B.需將影像增強(qiáng)電視系統(tǒng)(imageintensifytelevision)圖像像素化C.經(jīng)A/D轉(zhuǎn)換器，將像素轉(zhuǎn)換為數(shù)字，即數(shù)字化D.經(jīng)計(jì)算機(jī)減影處理E.圖像進(jìn)行模擬減影（）132、關(guān)于DSA的臨床應(yīng)用，哪項(xiàng)描述不正確MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.可行數(shù)字化信息存儲(chǔ)B.所用對(duì)比劑濃度低，劑量少C.可實(shí)時(shí)觀察血流的動(dòng)態(tài)圖像D.可作為功能檢查手段E.DSA圖像質(zhì)量高，血管及其病變顯示清楚（）133、DSA設(shè)備包括MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.IITVB.高分辨力攝像管C.計(jì)算機(jī)D.顯示器和操作臺(tái)E.以上全是（）134、下列有關(guān)DSA敘述，正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.DSA的信噪比高B.DSA具有高的空間分辨率C.DSA具有高的對(duì)比分辨率D.大血管成像用高濃度、大劑量對(duì)比劑E.小血管成像用低濃度、小劑量對(duì)比劑（）135、DSA的常用成像方式是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.時(shí)間減影B.能量減影C.混合減影D.體層減影E.K-緣減影（）136、CT成像過(guò)程中需要測(cè)量體素的MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.質(zhì)量B.密度C.線性衰減系數(shù)D.體積E.每千克電子數(shù)（）137、在Lambert-Beer吸收定律中，其中L為MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.入射X線強(qiáng)度B.出射X線強(qiáng)度C.線性衰減系數(shù)D.X線穿過(guò)物體的厚度E.X線穿過(guò)物體時(shí)間（）138、CT掃描時(shí)，球管連續(xù)旋轉(zhuǎn)曝光，檢查床不停頓單向移動(dòng)并采集數(shù)據(jù)的方式是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.步進(jìn)掃描B.螺旋掃描C.間隔掃描D.持續(xù)掃描E.高速掃描（）139、多層螺旋CT與單層螺旋CT的主要區(qū)別是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.球管數(shù)目多B.計(jì)算機(jī)多C.探測(cè)器排數(shù)多D.準(zhǔn)直器多E.濾線柵多（）140、關(guān)于灰階與CT值關(guān)系的敘述，正確的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.高CT值部分被轉(zhuǎn)換為黑色B.高CT值部分被轉(zhuǎn)換為白色C.X射線衰減越大，轉(zhuǎn)換成灰階后顏色越深D.圖像中X射線未被衰減，它將顯示為白色圖像E.改變窗寬，也可改變被顯示物體的CT值（）141、CT成像原理利用的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.多方位成像特性B.橫斷面圖像顯示特性C.X線的吸收衰減特性D.數(shù)據(jù)采集系統(tǒng)(DAS)特性E.X線透過(guò)被照體之后的直進(jìn)性（）142、CT值的單位是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.KWB.HUC.WD.LE.CM（）143、CT與常規(guī)X線檢查相比，突出的特點(diǎn)是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.曝光時(shí)間短B.空間分辨率高C.密度分辨率高D.病變定位定性明確E.適于全身各部位檢查（）144、有關(guān)窗寬的論述，錯(cuò)誤的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.窗寬決定顯示CT值范圍的大小B.窗寬加大，提高圖像中低密度組織對(duì)比C.組織的CT值大于窗寬規(guī)定范圍時(shí)呈白色D.窗寬加大，顯示圖像原灰階層次增多E.調(diào)節(jié)窗寬可改變圖像的密度差（）145、CT濾過(guò)器作用的關(guān)鍵在于MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.吸收低能量X線B.優(yōu)化射線的能譜C.減少病人照射劑量D.使射線能量分布均勻E.使射線近似單一性（）146、目前提出的降低多層CT劑量的措施之一是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A."不變焦點(diǎn)"技術(shù)B."可變焦點(diǎn)"技術(shù)C."焦點(diǎn)增大"技術(shù)D."焦點(diǎn)減小"技術(shù)E."焦點(diǎn)對(duì)稱"技術(shù)（）147、CT成像，能將光信號(hào)轉(zhuǎn)換為電信號(hào)的是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.探測(cè)器B.準(zhǔn)直器C.陣列處理機(jī)D.A/D轉(zhuǎn)換器E.D/A轉(zhuǎn)換器（）148、CT值定義公式中的常數(shù)(k)應(yīng)該是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.500B.1000C.2000D.-1000E.-2000（）149、CT掃描與常規(guī)體層攝影相比，根本區(qū)別是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldClick[]A.空間分辨力的高低B.圖像顯示范圍大小C.病人受線量的多少D.無(wú)層面外組織重疊E.可獲得冠狀面、矢狀面像（）150、決定CT圖像空間分辨力的主要因素是MACROBUTTONDoFieldClick[]MACROBUTTONDoFieldC