MR imaging of acquired abnormalities of the spleen.

Ito, Katsuyoshi; Mitchell, Donald G.; Honjo, Kazumitsu; Fujita, Takeshi; Uchisako, H; Matsumoto, Tsuneo; Matsunaga, Naofumi; Honma, Yutaka; Yamakawa, K.

doi:10.2214/ajr.168.3.9057518

Cited by 46 publications

(19 citation statements)

References 4 publications

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“…(16) They result from either a previous trauma, infection or infarction. (17) On imaging, false cysts tend to be small in size, well defined, and mostly multilocular. They are usually located close to the splenic capsule.…”

Section: False Cystsmentioning

confidence: 99%

Imaging of the spleen: what the clinician needs to know

Vancauwenberghe¹,

Snoeckx²,

Vanbeckevoort³

et al. 2015

smedj

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The spleen is considered 'the forgotten organ' among radiologists and clinicians, although it is well visualised on abdominal computed tomography and magnetic resonance imaging. Moreover, the spleen is commonly involved in a wide range of pathologic disorders. These include congenital anomalies, infectious and inflammatory diseases, vascular disorders, benign and malignant tumours, and systemic disorders. In this review, we focus on the key imaging findings of the normal spleen, its variants, as well as relevant congenital and acquired abnormalities. It is of utmost importance to recognise and correctly interpret the variable spectrum of abnormalities that may involve the spleen, in order to avoid unnecessary invasive procedures and to guide adequate treatment.

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Section: False Cystsmentioning

confidence: 99%

Imaging of the spleen: what the clinician needs to know

Vancauwenberghe¹,

Snoeckx²,

Vanbeckevoort³

et al. 2015

smedj

View full text Add to dashboard Cite

show abstract

“…The role of MR in splenic trauma is unclear. Some articles describe a high sensitivity in the diagnosis of splenic hematoma because of high signal intensity on both T1and T2-weighted images [54]. Although some authors have described good results in using detailed angiographic examinations and transcatheter arterial embolization in order to avoid a splenectomy or splenorrhaphy among patients with blunt splenic injury, this method has not yet encouraged more extensive evaluation [22,23].…”

Section: Splenic Injurymentioning

confidence: 99%

“…The infarct appears hyperechoic when chronic because of fibrosis and scarring [16,66]. There are few reports which discuss the appearance of splenic infarcts on MR; however, some authors describe the typical finding as a wedge-shaped area of abnormal signal intensity, which may vary depending on the age of the infarct [54,64]. The infarcted areas also appear as perfusion defects with sharply marginated zones [54].…”

Section: Splenic Infarctionmentioning

confidence: 99%

Radiology of the spleen

2001

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The spleen is generally not considered a challenge to the radiologist. Most often it poses a problem by anomalies or an irregular but normal contrast enhancement; however, a variety of inflammatory, infectious and neoplastic diseases may involve the spleen. CT and ultrasonography are screening modalities for the spleen. For problem solving, MR imaging can be helpful, especially due to its free choice of the imaging plane and because of the high resolution in contrast MR imaging. Splenic angiography as a diagnostic tool has generally been replaced by CT, ultrasound, or MR and is now used as an interventional method, e. g., in non-surgical management of patients with chronic idiopathic thrombocytopenia or in patients with splenic trauma. This article reviews the radiology of the spleen, including anatomy, embryology, splenomegaly, splenic injury, infarction, cysts, tumors, abscesses, sarcoidosis, and AIDS. Knowledge about the use of different imaging modalities and underlying gross and microscopic pathologic features leads to a better understanding of the radiologic findings.

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“…Moreover, measurements of spleen volume using sonography are often limited by the incomplete scanning of the spleen or by the incomplete visualization of the organ due to the presence of overlying structures and by the observer skill in recognizing organ boundaries [4,18]. Computed tomography has been considered as a reliable modality for imaging spleen and provides reliable splenic volume estimations [20]; however, MR imaging seems to offer potential advantages over CT, namely the use of non-ionizing radiation and its superior ability in demonstrating and characterizing soft tissues [21,22].…”

Section: Discussionmentioning

confidence: 99%

Estimation of spleen volume using MR imaging and a random marking technique

et al. 2000

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The aim of this study was to apply a random marking volumetric technique in MR images for estimation of spleen volume. The MR imaging was performed in phantoms and 16 patients with indications unrelated to splenic disease. Images were transferred to a workstation to perform volumetric measurements using the random marking technique and the conventional technique of manual planimetry. Two observers independently measured splenic volume in order to evaluate reproducibility of both volumetric techniques. Phantom experiments revealed that the accuracy of the random marking technique and manual planimetry was approximately the same. In vivo splenic volume measurements derived from both volumetric techniques were highly correlated (r = 0.99, p < 0.0001). For both observers intraobserver variation was found to be lower with the random marking technique than with manual planimetry. Interobserver coefficient of variation using the manual planimetry was 4.6% and was reduced to 2.9% by adopting the random marking technique. The random marking technique was almost two times faster than the manual planimetry. The combination of the random marking technique with MR imaging might provide accurate, reproducible, quick splenic volume estimations.

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MR imaging of acquired abnormalities of the spleen.

Cited by 46 publications

References 4 publications

Imaging of the spleen: what the clinician needs to know

Imaging of the spleen: what the clinician needs to know

Radiology of the spleen

Estimation of spleen volume using MR imaging and a random marking technique

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