磁共振成像与计算机断层扫描及膀胱内超声在膀胱癌分期中的比较。
Comparison of magnetic resonance imaging with computed tomography and intravesical ultrasound in staging bladder cancer.
作者信息
Salo J O, Kivisaari L, Lehtonen T
机构信息
Second Department of Surgery, Helsinki University Central Hospital, Finland.
出版信息
Urol Radiol. 1988;10(4):167-72. doi: 10.1007/BF02926562.
Magnetic resonance imaging (MRI), computed tomography (CT), and intravesical ultrasound (US) scanning were performed on 11 patients in whom infiltrative bladder cancer was suspected at cystoscopy. Equipment with magnetic field 0.02 T was used for the MRI. Tumors larger than 2 cm could be identified in all cases by MRI. In 3 of 4 cases in which the tumor was smaller than 2 cm, it could not be properly visualized and the degree of infiltration could not be assessed. When the tumor was visualized on MRI, tumor staging by MRI was correct in 7 of 8 cases (88%). Infiltration of the deep muscle layer of the bladder wall could be detected by MRI but not by CT. Intravesical US staging was correct in 7 of 9 cases (78%). As a noninvasive method, MRI is promising for the preoperative evaluation of bladder cancer and offers the advantage of imaging the bladder in different planes.
对11例膀胱镜检查怀疑为浸润性膀胱癌的患者进行了磁共振成像（MRI）、计算机断层扫描（CT）和膀胱内超声（US）扫描。MRI使用的是磁场强度为0.02T的设备。所有病例中，MRI均可识别出大于2cm的肿瘤。在4例肿瘤小于2cm的病例中，有3例无法清晰显示，浸润程度无法评估。当肿瘤在MRI上显影时，8例中有7例（88%）MRI肿瘤分期正确。MRI可检测到膀胱壁深层肌肉层的浸润，而CT则不能。膀胱内超声分期在9例中有7例（78%）正确。作为一种非侵入性方法，MRI在膀胱癌术前评估中具有前景，且具有在不同平面成像膀胱的优势。
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