Evaluating the Diagnostic Efficacy of Susceptibility Weighted Imaging (SWI) in Pelvic Endometriosis
Yıl 2025,
Cilt: 4 Sayı: 2, 73 - 80, 06.09.2025
Ahmet Tuğrul Akkuş
,
Elif Gözgeç
,
Bilge Hatun Akkuş
,
Yakup Kumtepe
Öz
Objective: The purpose of the study is to compare the diagnostic efficacy of Susceptibility Weighted Imaging (SWI) to conventional Magnetic Resonance Imaging (MRI) in preoperative evaluation of endometriosis patients.
Material and Methods: Between April 2022 and January 2023, patients with a histopathological diagnosis of endometrioma or endometriosis after laparoscopy were included in the study. A total of 18 patients with 30 endometrioma/endometriosis lesions were evaluated. SWI were evaluated for endometriosis foci detected in conventional MRI. Susceptibility artifacts detected in SWI but not in the conventional MRI were also noted.
Results: There was no statistically significant difference between the diagnostic efficacies of SWI; T1 weighted imaging (WI) and T2 WI. While all of them had statistically significant diagnostic efficacy compared to the T2 dark spot sign. When the lesions were separated as ovarian endometrioma and deep pelvic endometriosis foci, no statistically significant difference was found between the diagnostic efficacies of the SWI sequence, while a statistically significant difference was found for the diagnostic efficacy of the T1 WI hyperintensity (p=1.000 and p=0.032, respectively).
Conclusion: The diagnostic sensitivity of the SWI sequence in the diagnosis of endometrioma is similar to the fat-suppressed T1- WI hyperintensity and T2-WI hypointensity combination accepted as diagnostic criteria. The diagnostic superiority of the SWI sequence over the fat suppressed T1-WI sequence was shown in the detection of deep pelvic endometriosis foci. It was concluded that adding the SWI sequence to routine abdominal sequences and evaluating them with conventional MRI would increase the diagnostic efficacy for endometriosis.
Kaynakça
-
Bulut E, Peker M, Kupeli A, Danisan G, Bulut AC. The efficiency of susceptibility-weighted MRI in the differentiation of endometriomas from haemorrhagic ovarian cysts. Abdominal Radiol. 2021;46(11):5337-5343. doi:10.1007/s00261-021-03196-4
-
Chen H, Wang G, Wang X, Gao Y, Liang J, Wang J. Diagnostic value of susceptibility-weighted imaging for endometrioma: preliminary results from a retrospective analysis. Acta Radiologica. 2022;63(7):976-981. doi:10.1177/02841851211022495
Solak A, Sahin N, Genc B, Sever AR, Genc M, Sivrikoz ON. Diagnostic value of susceptibility-weighted imaging of abdominal wall endometriomas during the cyclic menstrual changes: a preliminary study. Eur J Radiol. 2013;82(9):e411-416. doi:10.1016/j.ejrad.2013.04.030
-
Woodward PJ, Sohaey R, Mezzetti TP, Jr. Endometriosis: radiologic-pathologic correlation. Radiographics: a review publication of the Radiological Society of North America, Inc. 2001;21(1):193-216; questionnaire 288-94. doi:10.1148/radiographics.21.1.g01ja14193
-
Togashi K, Nishimura K, Kimura I, et al. Endometrial cysts: diagnosis with MR imaging. Radiology. 1991;180(1):73-78. doi:10.1148/radiology.180.1.2052726
-
Dooms GC, Hricak H, Tscholakoff D. Adnexal structures: MR imaging. Radiology. 1986;158(3):639-646. doi:10.1148/radiology.158.3.3511501
-
Nair JR, Van Hecke W, De Belder F, et al. High-resolution susceptibility-weighted imaging at 3 T with a 32-channel head coil: technique and clinical applications. AJR Am J Roentgenol. 2010;195(4):1007-1014. doi:10.2214/AJR.10.4218
-
Takeuchi M, Matsuzaki K, Harada M. Susceptibility-weighted MRI of extra-ovarian endometriosis: preliminary results. Abdominal Imaging. 2015;40(7):2512-2516. doi:10.1007/s00261-015-0378-z
-
Cimsit C, Yoldemir T, Guclu M, Akpinar IN. Susceptibility-weighted magnetic resonance imaging for the evaluation of deep infiltrating endometriosis: preliminary results. Acta Radiologica. 2016;57(7):878-885. doi:10.1177/0284185115602147
-
Takeuchi M, Matsuzaki K, Nishitani H. Susceptibility-weighted MRI of endometrioma: preliminary results. AJR Am J Roentgenol. 2008;191(5):1366-1370. doi:10.2214/AJR.07.3974
-
Lee NK, Kim S, Kim KH, et al. Diffusion-weighted magnetic resonance imaging in the differentiation of endometriomas from hemorrhagic cysts in the ovary. Acta Radiologica. 2016;57(8):998-1005. doi:10.1177/0284185115609805
-
Cansu A, Bulut E, Dinc G, et al. Diagnostic Efficacy of T2 Dark Spot, T2 Dark Rim Signs, and T2 Shading on Magnetic Resonance Imaging in Differentiating Endometriomas From Hemorrhagic Cysts. J Computer Assisted Tomography. 2019;43(4):619-622. doi:10.1097/RCT.0000000000000892
-
Corwin MT, Gerscovich EO, Lamba R, Wilson M, McGahan JP. Differentiation of ovarian endometriomas from hemorrhagic cysts at MR imaging: utility of the T2 dark spot sign. Radiology. 2014;271(1):126-132. doi:10.1148/radiol.13131394
PELVİK BÖLGEDE ENDOMETRİOZİS TANISINDA DUYARLILIK AĞIRLIKLI GÖRÜNTELEME (SWI) SEKANSININ DEĞERLENDİRİLMESİ
Yıl 2025,
Cilt: 4 Sayı: 2, 73 - 80, 06.09.2025
Ahmet Tuğrul Akkuş
,
Elif Gözgeç
,
Bilge Hatun Akkuş
,
Yakup Kumtepe
Öz
Amaç: Çalışmanın amacı, endometriozis hastalarının preoperatif değerlendirilmesinde Duyarlılık Ağırlıklı Görüntüleme (SWI) ile konvansiyonel Manyetik Rezonans Görüntüleme (MRG)'nin tanısal etkinliğini karşılaştırmaktır.
Gereç ve Yöntemler: Nisan 2022 ile Ocak 2023 arasında, laparoskopi sonrası histopatolojik olarak endometrioma veya endometriozis tanısı alan hastalar çalışmaya dahil edildi. Toplamda 30 endometrioma/endometriozis lezyonu olan 18 hasta değerlendirildi. Konvansiyonel MRG'de tespit edilen endometriozis odakları için SWI değerlendirildi. SWI'de tespit edilen ancak konvansiyonel MRG'de tespit edilmeyen duyarlılık artefaktları da kaydedildi.
Bulgular: SWI'nin; T1 ağırlıklı görüntüleme (AG) ve T2 AG'nin tanısal etkinlikleri arasında istatistiksel olarak anlamlı bir fark yoktu. Hepsinin T2 siyah nokta işaretine kıyasla istatistiksel olarak anlamlı tanısal etkinliği vardı. Lezyonlar ovaryan endometrioma ve derin pelvik endometriozis odakları olarak ayrıldığında SWI sekansının tanısal etkinlikleri arasında istatistiksel olarak anlamlı bir fark bulunmazken, T1 AG hiperintensitesinin tanısal etkinliği için istatistiksel olarak anlamlı bir fark bulundu (sırasıyla p=1.000 ve p=0.032).
Sonuç: Endometrioma tanısında SWI sekansının tanısal duyarlılığı, tanı kriteri olarak kabul edilen yağ baskılanmış T1-AG hiperintensitesi ve T2-AG hipointensitesi kombinasyonuna benzerdir. Derin pelvik endometriozis odaklarının saptanmasında SWI sekansının yağ baskılanmış T1-AG sekansına göre tanısal üstünlüğü gösterilmiştir. SWI sekansının rutin abdominal sekanslara eklenmesi ve konvansiyonel MRI ile değerlendirilmesinin endometriozis için tanısal etkinliği artıracağı sonucuna varılmıştır.
Kaynakça
-
Bulut E, Peker M, Kupeli A, Danisan G, Bulut AC. The efficiency of susceptibility-weighted MRI in the differentiation of endometriomas from haemorrhagic ovarian cysts. Abdominal Radiol. 2021;46(11):5337-5343. doi:10.1007/s00261-021-03196-4
-
Chen H, Wang G, Wang X, Gao Y, Liang J, Wang J. Diagnostic value of susceptibility-weighted imaging for endometrioma: preliminary results from a retrospective analysis. Acta Radiologica. 2022;63(7):976-981. doi:10.1177/02841851211022495
Solak A, Sahin N, Genc B, Sever AR, Genc M, Sivrikoz ON. Diagnostic value of susceptibility-weighted imaging of abdominal wall endometriomas during the cyclic menstrual changes: a preliminary study. Eur J Radiol. 2013;82(9):e411-416. doi:10.1016/j.ejrad.2013.04.030
-
Woodward PJ, Sohaey R, Mezzetti TP, Jr. Endometriosis: radiologic-pathologic correlation. Radiographics: a review publication of the Radiological Society of North America, Inc. 2001;21(1):193-216; questionnaire 288-94. doi:10.1148/radiographics.21.1.g01ja14193
-
Togashi K, Nishimura K, Kimura I, et al. Endometrial cysts: diagnosis with MR imaging. Radiology. 1991;180(1):73-78. doi:10.1148/radiology.180.1.2052726
-
Dooms GC, Hricak H, Tscholakoff D. Adnexal structures: MR imaging. Radiology. 1986;158(3):639-646. doi:10.1148/radiology.158.3.3511501
-
Nair JR, Van Hecke W, De Belder F, et al. High-resolution susceptibility-weighted imaging at 3 T with a 32-channel head coil: technique and clinical applications. AJR Am J Roentgenol. 2010;195(4):1007-1014. doi:10.2214/AJR.10.4218
-
Takeuchi M, Matsuzaki K, Harada M. Susceptibility-weighted MRI of extra-ovarian endometriosis: preliminary results. Abdominal Imaging. 2015;40(7):2512-2516. doi:10.1007/s00261-015-0378-z
-
Cimsit C, Yoldemir T, Guclu M, Akpinar IN. Susceptibility-weighted magnetic resonance imaging for the evaluation of deep infiltrating endometriosis: preliminary results. Acta Radiologica. 2016;57(7):878-885. doi:10.1177/0284185115602147
-
Takeuchi M, Matsuzaki K, Nishitani H. Susceptibility-weighted MRI of endometrioma: preliminary results. AJR Am J Roentgenol. 2008;191(5):1366-1370. doi:10.2214/AJR.07.3974
-
Lee NK, Kim S, Kim KH, et al. Diffusion-weighted magnetic resonance imaging in the differentiation of endometriomas from hemorrhagic cysts in the ovary. Acta Radiologica. 2016;57(8):998-1005. doi:10.1177/0284185115609805
-
Cansu A, Bulut E, Dinc G, et al. Diagnostic Efficacy of T2 Dark Spot, T2 Dark Rim Signs, and T2 Shading on Magnetic Resonance Imaging in Differentiating Endometriomas From Hemorrhagic Cysts. J Computer Assisted Tomography. 2019;43(4):619-622. doi:10.1097/RCT.0000000000000892
-
Corwin MT, Gerscovich EO, Lamba R, Wilson M, McGahan JP. Differentiation of ovarian endometriomas from hemorrhagic cysts at MR imaging: utility of the T2 dark spot sign. Radiology. 2014;271(1):126-132. doi:10.1148/radiol.13131394