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Basics Of Abdominal
Ultrasonography
台中榮民總醫院
放射線部
放射師:張晏齊
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Fatty liver
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Diffuse change (Fatty liver)
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Diffuse change (Fatty liver)
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Diffuse change (Fatty liver)
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Fatty Liver with Focal Sparing
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Fatty Liver – Focal Fatty Change
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Diffuse change (coarse)
L
RK
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1. Liver cirrhosis 2. Polycystic liver disease
Size: L’t lobe (5-10cm) R’t lobe (8-15cm)
Liver
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Liver Cirrhosis
Cirrhosis Normal Liver
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Liver Cirrhosis
Coarsening
Enlargement of the caudate lobe
Bulging contours
Vascular irregularities(collateral circulation)
Recanalized umbilical vein
Ascites , splenomegaly
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Liver Cirrhosis
1. Coarsening
2. Liver cirrhosis
3. Portal hypertension
4. Portal vein thrombosis
5. vascular irregularities - Cavernous transformation
- Collateral circulation
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Portal vein thrombosis
1.Splenamegly
3.Go to another way.
Portosystemic shunt
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Portosystemic shunt
Cavernous transformation of the portal vein 1.Esophageal varices
2. Collateral system(Caput medusae)
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Cavernous transformation of the
portal vein (CTPV)
CTPV is most of the times inefficient in guaranteeing adequate
portal vein inflow to the liver parenchyma far from the hilum and,
therefore, is associated with an increased hepatic arterial flow to
those peripheral liver segments. These changes lead to a central
liver hypertrophy and peripheral liver atrophy
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Liver cirrhosis
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Cavernous transformation of the portal vein (CTPV)
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Cavernous transformation of the portal vein (CTPV)
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Collateral system
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Caput medusae(collateral system)
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Polycystic liver disease
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Polycystic liver disease
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Liver mass
Hyperechoic lesion
Hypoechoic lesion
Anechoic
Heterogeneous
Metastasis
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Hyperechoic lesion
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Hypoechoic lesion
HCC(hepatocelluar carcinoma) FNH(focal nodular hyperplasia)
Marked fatty - hemangioma
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Anechoic
Simple cyst
Multiple cysts
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Heterogeneous
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Heterogeneous
HCC Post RFA HCC - necrosis
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Metastasis
Cluster sign Multiple metastases in the liver
Heterogeneous
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Metastasis
Metastases in the liver
Target sign
Bull’s eye
Heterogeneous
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Metastasis
Breast Ca. Meta. Breast Ca, Meta.
Colon Ca. Meta. metastases of an ovarian carcinoma
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Pleural Effusion
R`t PE
RK
L L
R`t PE
IVC
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Ascites
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Gall bladder
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Gall bladder
Size:
Long axis 6-12cm
Short axis 3-5cm
Contract < 5cm
Distended > 12cm when patient is fasting
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Gall bladder
Wall thickness:
Measured in the side in contact with the liver.
Normally it is up to 3mm
From 3-5mm >>> suspect thick wall
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Gall bladder
>5mm→It is a thick wall gall bladder which is
seen in:
1. Cholecystitis(acute-chronic)
2. Ascites
3. Hepatitis(viral)
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GB – wall thickening
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GB – wall thickening
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GB stone
Twinkle artifact
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Gall Bladder sluge
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Gall bladder mud
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Comet tail
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GB polyp
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Contracted GB & enlarge GB
Non-fasting GB
Chronic Cholelithiasis
Acute Cholelithiasis
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Double gun sign
Common bile duct (CBD)
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IHBD
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Pneumobilia
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Pancreas
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Pancreas anatomy
• Length – 15 cm
• Head – 23 +/- 3 mm
• Body – 20 +/- 3 mm
• Tail – 15 +/- 2.5 mm
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Pancreas
• Chronic pancreatitis
• Acute pancreatitis
• 1. 1.Acute interstitial and edematous
pancreatitis.(急性水腫間質性胰臟炎)
2.Acute necrotizing pancreatitis.(急性壞死性胰臟炎
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Atrophy of the pancreastic body and tail with enlargement.
Chornic pancreatities
Pancrease
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Pancreatitis
• Acute pancreatitis
• 1. 1.Acute interstitial and edematous pancreatitis.(急性水腫間質性胰臟炎) 2.Acute necrotizing pancreatitis.(急性壞死性胰臟炎
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Acute interstitial and edematous
pancreatitis.(急性水腫間質性胰臟炎)
• These patients have no organ failure.
• Most of them have samll amount fluid
collections and no necrosis.
• These patients usually recover by the end of
the first week.
• Fat stranding (胰臟周圍脂肪有輕微發炎之現象)
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Acute interstitial pancreatitis. Normal enhancing pancreas with
swelling and little peripancreatic fat stranding (arrows).
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Acute interstitial pancreatitis.
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2.Acute necrotizing pancreatitis
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Acute necrotizing pancreatitis
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Pseudocyst
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Aorta
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Spleen
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Spleen
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Splenomegaly
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Accesarry spleen
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Spleen Hematoma
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CYST
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Spleen
Hemosidrosis:
1.White dots in spleen
2.Means portal hypertension
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Spleen
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Kidney
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Unilateral Enlarged Kidney
• Compensatory hypertrophy
• Renal lipomatosis
• Focal mass
• Hydronephrosis / pyonephrosis
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Renal lipomatosis Renal lipomatosis
腎竇聚集過多脂肪
腎竇內回音增加
腎竇增厚
腎皮質變薄
腎臟可能增大
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Bilateral Enlarged Kidney - DM
RK: 138.5 mm LK: 149.6 mm
腎臟變大, 皮質增厚, 皮質回音增強
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Nephritis - SLE
Bilateral Enlarged Kidney
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• 邊緣平滑之圓形構造
• 內呈無回音型
• 後方有明顯回音增強
Renal cyst
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Nephrotic syndrome(腎病症候群)
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Bilateral Reduced Kidney
End-stage renal disease
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Polycystic kidney (PCK)
•整個腎臟佈滿囊腫
•腎臟腫大
•兩側腎臟皆有病變
•腎臟邊界模糊不清
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體染色體顯性多囊腎
Autosomal dominant polycystic kidney disease (ADPKD)
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體染色體顯性多囊腎
Autosomal dominant polycystic kidney disease (ADPKD)
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12歲女性,瀰漫性腎小管擴張
體染色體隱性多囊腎
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Renal stone
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Renal stone(Milk Calcium)
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Renal stone(gouty kidney)
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Hydronephrosis
• 腎臟變大、皮質變薄
• 腎竇內出現低回音之集尿系統
• 腎盞(renal calyx)擴張清晰可見
• 擴張之輸尿管內可能出現結石
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Hydronephrosis
輸尿管結石
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輸尿管擴張
輸尿管結石
Hydronephrosis
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Acute pyelonephritis(急性腎盂腎炎)
• 病患會發燒, 畏寒, 腰痛, 白血球增加, 膿尿, 菌尿
• 女性多於男性
• 腎臟可為正常或腫脹變大
• 腎臟實質回音降低
• 實質與髓質分界消失
• 腎竇模糊不清
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Acute pyelonephritis
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邊緣不規則之低回音區
Renal abscess
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Renal angiomyolipoma
• 內含脂肪,肌肉,及血管不等成份之
良性腫瘤
• 又可稱之為過誤瘤(hamartoma)
• 常發生於女性
• 較大之腫瘤易破裂出血
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• 腫瘤呈混合回音型
• 腫瘤內可出現高回音之脂肪
Renal angiomyolipoma
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Renal cell carcinoma(RCC)
• 腎臟輪廓變形邊緣
鼓出
• 腫瘤呈混合回音型
• 可侵蝕腎靜脈
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Renal cell carcinoma(RCC)
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• 臨床上表現為血尿
或潛血尿
• 通常為位於集尿系
統或位於腎竇之實
質腫瘤
• 常合併有腎盂積液
( hydronephrosis )
Transitional cell carcinoma(TCC)
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Transitional cell carcinoma
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Transitional cell carcinoma
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Transplant Kidney
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Transplant Kidney
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Renal stone
Post-biopsy Subcapsular Hematoma
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Double pelvise and ureter
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Horseshoe kidney
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Thank you!