Comparison of DWI and PET/CT in evaluation of lymph node metastasis in uterine cancer

doi:10.4329/wjr.v4.i5.207

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May 28, 2012 (publication date) through Nov 20, 2024

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World Journal of Radiology

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1949-8470

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Radiol. May 28, 2012; 4(5): 207-214
Published online May 28, 2012. doi: 10.4329/wjr.v4.i5.207

Table 1 Overall patient- and region-based diagnostic accuracy of diffusion-weighted imaging and positron emission tomography and computed tomography n (%)

	Sensitivity	Specificity	PPV	NPV	Accuracy
Patient-based DWI (n = 25)	8/9 (88.9)	7/16 (43.8)	8/17 (47.1)	7/8 (87.5)	15/25 (60.0)
PET/CT (n = 25)	4/9 (44.4)	15/16 (93.8)	4/5 (80.0)	15/20 (75.0)	16/25 (64.0)
Region-based DWI (n = 200)	30/36 (83.3)	84/164 (51.2)	30/110 (27.3)	84/90 (93.3)	114/200 (57.0)
PET/CT (n = 200)	14/36 (38.9)	158/164 (96.3)	14/20 (70.0)	158/180 (87.8)	172/200 (86.0)

DWI: Diffusion-weighted imaging; PET/CT: Positron emission tomography and computed tomography; PPV: Positive predictive value; NPV: Negative predictive value.

Table 2 Region-based diagnostic accuracy of diffusion-weighted imaging and positron emission tomography and computed tomography n (%)

	Sensitivity	Specificity	Accuracy
Common iliac LNs
DWI (n = 50)	6/7 (85.7)	22/43 (51.2)	28/50 (56.0)
PET/CT (n = 50)	3/7 (42.9)	41/43 (95.3)	44/50 (88.0)
External iliac LNs
DWI (n = 50)	6/7 (85.7)	22/43 (51.2)	28/50 (56.0)
PET/CT (n = 50)	3/7 (42.9)	41/43 (95.3)	44/50 (88.0)
Internal iliac LNs
DWI (n = 50)	8/10 (80.0)	20/40 (50.0)	28/50 (56.0)
PET/CT (n = 50)	4/10 (40.0)	39/40 (97.5)	43/50 (86.0)
Obturator LNs
DWI (n = 50)	10/12 (83.3)	20/38 (52.6)	30/50 (60.0)
PET/CT (n = 50)	4/12 (33.3)	37/38 (97.4)	41/50 (82.0)

DWI: Diffusion-weighted imaging; PET/CT: Positron emission tomography and computed tomography; LNs: Lymph nodes.

Table 3 Node-based sensitivity of diffusion-weighted imaging and positron emission tomography and computed tomography according to the node size n (%)

Node size (mm)	DWI	PET/CT
1-9	18/24 (75.0)	4/24 (16.7)
10-18	12/12 (100.0)	10/12 (83.3)
Total	30/36 (83.3)	14/36 (38.9)

DWI: Diffusion-weighted imaging; PET/CT: Positron emission tomography and computed tomography.

Table 4 Patient-stage based diagnostic accuracy of diffusion-weighted imaging and positron emission tomography and computed tomography n (%)

	Sensitivity	Specificity	Accuracy
Stage I
DWI (n = 13)	1/2 (50.0)	5/11 (45.5)	6/13 (46.2)
PET/CT (n = 13)	0/2 (42.9)	11/11 (100.0)	11/13 (84.6)
Stage II
DWI (n = 9)	4/4 (100.0)	2/5 (40.0)	6/9 (66.7)
PET/CT (n = 9)	2/4 (50.0)	4/5 (80.0)	6/9 (66.7)
Stage III
DWI (n = 3)	3/3 (100.0)	0/0 (0)	3/3 (100.0)
PET/CT (n = 3)	2/3 (66.7)	0/0 (0)	2/3 (66.7)

DWI: Diffusion-weighted imaging; PET/CT: Positron emission tomography and computed tomography.

Citation: Kitajima K, Yamasaki E, Kaji Y, Murakami K, Sugimura K. Comparison of DWI and PET/CT in evaluation of lymph node metastasis in uterine cancer. World J Radiol 2012; 4(5): 207-214
URL: https://www.wjgnet.com/1949-8470/full/v4/i5/207.htm
DOI: https://dx.doi.org/10.4329/wjr.v4.i5.207