|
| High Resolution Ultrasonographic Evaluation of the Gallbladder:Value of Advanced Imaging Techniques |
|
| Jae Young Lee, M.D. Byung Ihn Choi, M.D. Joon Koo Han, M.D. Jeong Min Lee, M.D. Se Hyung Kim, M.D. Jin Young Choi, M.D. Su Jin Kim, M.D. |
|
| Department of Radiology, Seoul National University, College of Medicineand the Institute of Radiation Medicine, SNUMRC |
|
| PURPOSE : A prospective study to determine the role of compound imaging, speckle reduction imaging and tissue
harmonic imaging techniques in high-resolution gallbladder ultrasound examination.
MATERIALS and METHODS : Gallbladders in 39 patients were examined with conventional imaging, compound imaging,
compound imaging combined with speckle reduction imaging, and compound imaging combined with harmonic
imaging techniques, using 7- to 10-MHz linear array transducer. The overall image qualities, sharpness of
the anterior wall, depiction of the wall layers, and degree of internal artifact were evaluated. In cases of a gallbladder
lesion, its conspicuity, margin sharpness, and intensity of posterior shadowing were evaluated. Two radiologists
independently evaluated each image and graded each finding with a four-part scale. The Wilcoxon
signs rank test was used.
RESULTS : Compound imaging technique provided better results than conventional imaging technique in all categories
except the intensity of posterior shadowing of gallstone (p < 0.01). Compound imaging technique well
depicted the gallbladder wall layers in 34 of 39 cases and depicted them better than conventional ultrasonography
in 31 of 39 cases. Compound imaging also improved conspicuity and margin sharpness of the lesions.
Combined use of compound imaging and speckle reduction imaging technique did not provide better results
than compound imaging. Combined use of compound imaging and harmonic imaging provided better overall
image quality and fewer internal artifacts than compound imaging (p < 0.05).
CONCLUSION : Compound imaging technique was superior to conventional imaging in evaluating gallbladder and its
lesion with high frequency transducer. Combined use of compound imaging and harmonic imaging was helpful
to enhance overall image quality and reduce artifacts. |
|
| Keyword : Gallbladder Ultrasound (US), comparative studies Ultrasound (US), technology |
|
pdf파일 : 169-175이재영.pdf 
|
|
> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2005 ; 24 (4) : p.169-175
