### Abstract

Data from a set of 200 randomly selected patients treated in 4 large hospitals in Greece (50 patients per hospital) were analyzed in order to obtain preliminary DRLs for KAP and Tf during therapeutic ERCP procedures. Non-parametric statistic tests were performed in order to determine a statistically significant relation between KAP and Tf.

The resulting third quartiles for KAP and Tf for hospitals (A, B, C and D) were found as followed: KAPA = 10.7 Gy cm^2, TfA = 4.9 min; KAPB = 7.5 Gy cm^2, TfB = 5.0 min; KAPC = 19.0 Gy cm^2, TfC = 7.3 min; KAPD = 52.4 Gy cm^2, TfD = 15.8 min. The third quartiles, calculated for the total 200 cases sample, are: KAP = 18.8 Gy cm^2 and Tf = 8.2 min. For 3 out of 4 hospitals and for the total sample, p-values of statistical indices (correlation of KAP and Tf) are less than 0.001, while for the Hospital A p-values are ranging from 0.07 to 0.08. Using curve fitting, we finally determine that the relation of Tf and KAP is deriving from a power equation (KAP = Tf^1.282) with R^2 = 0.85.

The suggested Preliminary DRLs (deriving from the third quartiles of the total sample) for Greece are: KAP = 19 Gy cm^2 and Tf = 8 min, while the relation between KAP and Tf is efficiently described by a power equation

Language | English |
---|---|

Pages | 607-611 |

Number of pages | 5 |

Journal | Physica Medica |

Volume | 32 |

Issue number | 4 |

Early online date | 8 Apr 2016 |

DOIs | |

Publication status | Published - 30 Apr 2016 |

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### Keywords

- ERCP
- patient dose
- fluoroscopy time
- diagnostic reference levels

### Cite this

*Physica Medica*,

*32*(4), 607-611. https://doi.org/10.1016/j.ejmp.2016.03.018

}

*Physica Medica*, vol. 32, no. 4, pp. 607-611. https://doi.org/10.1016/j.ejmp.2016.03.018

**Preliminary diagnostic reference levels for endoscopic retrograde cholangio-pancreatography in Greece.** / Tsapaki, V.; Delinikolas, Panagiotis; Paraskeva, K.D.; Paspatis, I.A.G.; Scotiniotis, H.; Georgopoulos, P.; Voudoukis, E.; Finou, P.; Athanasopoulos, N.; Lydakis, I.; Giannakopoulos, A.; Mathou, N.; Angelogiannakopoulou, N.; Triantopoulou, C.; Karagiannis, J.A.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Preliminary diagnostic reference levels for endoscopic retrograde cholangio-pancreatography in Greece

AU - Tsapaki, V.

AU - Delinikolas, Panagiotis

AU - Paraskeva, K.D.

AU - Paspatis, I.A.G.

AU - Scotiniotis, H.

AU - Georgopoulos, P.

AU - Voudoukis, E.

AU - Finou, P.

AU - Athanasopoulos, N.

AU - Lydakis, I.

AU - Giannakopoulos, A.

AU - Mathou, N.

AU - Angelogiannakopoulou, N.

AU - Triantopoulou, C.

AU - Karagiannis, J.A.

PY - 2016/4/30

Y1 - 2016/4/30

N2 - The main objective of this study was to determine the preliminary Diagnostic Reference Levels (DRLs) in terms of Kerma Area Product (KAP) and fluoroscopy time (Tf) during Endoscopic Retrograde Cholangio-Pancreatography (ERCP) procedures. Additionally, an investigation was conducted to explore the statistical relation between KAP and Tf.Data from a set of 200 randomly selected patients treated in 4 large hospitals in Greece (50 patients per hospital) were analyzed in order to obtain preliminary DRLs for KAP and Tf during therapeutic ERCP procedures. Non-parametric statistic tests were performed in order to determine a statistically significant relation between KAP and Tf.The resulting third quartiles for KAP and Tf for hospitals (A, B, C and D) were found as followed: KAPA = 10.7 Gy cm^2, TfA = 4.9 min; KAPB = 7.5 Gy cm^2, TfB = 5.0 min; KAPC = 19.0 Gy cm^2, TfC = 7.3 min; KAPD = 52.4 Gy cm^2, TfD = 15.8 min. The third quartiles, calculated for the total 200 cases sample, are: KAP = 18.8 Gy cm^2 and Tf = 8.2 min. For 3 out of 4 hospitals and for the total sample, p-values of statistical indices (correlation of KAP and Tf) are less than 0.001, while for the Hospital A p-values are ranging from 0.07 to 0.08. Using curve fitting, we finally determine that the relation of Tf and KAP is deriving from a power equation (KAP = Tf^1.282) with R^2 = 0.85.The suggested Preliminary DRLs (deriving from the third quartiles of the total sample) for Greece are: KAP = 19 Gy cm^2 and Tf = 8 min, while the relation between KAP and Tf is efficiently described by a power equation

AB - The main objective of this study was to determine the preliminary Diagnostic Reference Levels (DRLs) in terms of Kerma Area Product (KAP) and fluoroscopy time (Tf) during Endoscopic Retrograde Cholangio-Pancreatography (ERCP) procedures. Additionally, an investigation was conducted to explore the statistical relation between KAP and Tf.Data from a set of 200 randomly selected patients treated in 4 large hospitals in Greece (50 patients per hospital) were analyzed in order to obtain preliminary DRLs for KAP and Tf during therapeutic ERCP procedures. Non-parametric statistic tests were performed in order to determine a statistically significant relation between KAP and Tf.The resulting third quartiles for KAP and Tf for hospitals (A, B, C and D) were found as followed: KAPA = 10.7 Gy cm^2, TfA = 4.9 min; KAPB = 7.5 Gy cm^2, TfB = 5.0 min; KAPC = 19.0 Gy cm^2, TfC = 7.3 min; KAPD = 52.4 Gy cm^2, TfD = 15.8 min. The third quartiles, calculated for the total 200 cases sample, are: KAP = 18.8 Gy cm^2 and Tf = 8.2 min. For 3 out of 4 hospitals and for the total sample, p-values of statistical indices (correlation of KAP and Tf) are less than 0.001, while for the Hospital A p-values are ranging from 0.07 to 0.08. Using curve fitting, we finally determine that the relation of Tf and KAP is deriving from a power equation (KAP = Tf^1.282) with R^2 = 0.85.The suggested Preliminary DRLs (deriving from the third quartiles of the total sample) for Greece are: KAP = 19 Gy cm^2 and Tf = 8 min, while the relation between KAP and Tf is efficiently described by a power equation

KW - ERCP

KW - patient dose

KW - fluoroscopy time

KW - diagnostic reference levels

UR - http://www.sciencedirect.com/science/article/pii/S1120179716300138

U2 - 10.1016/j.ejmp.2016.03.018

DO - 10.1016/j.ejmp.2016.03.018

M3 - Article

VL - 32

SP - 607

EP - 611

JO - Physica Medica

T2 - Physica Medica

JF - Physica Medica

SN - 1120-1797

IS - 4

ER -