An advanced RFID-based system to localize gastric and colon cancers during laparoscopic surgery

Lee, Kang Moo; Min, Jae Seok; Choi, Won Jung; Ahn, Jin Woo; Yoon, Song Woo; Kim, Young-Jin

doi:10.1007/s00464-020-07371-4

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…In laparoscopic surgery, malignant tumors present in the colon (or stomach) interior (circular folds or visceral) are not visible outside (cecum or parietal) of the colon, so it is not easy to locate the tumor in the cavity [ 4 ]. Therefore, to locate the tumor on the inner wall of the stomach (circular folds or visceral), the tumor is located through an endoscope three days before surgery (flow chart on the left), as shown in Figure 1 , and then the clip is pre-installed around the tumor.…”

Section: Analysis Of the Magnetic Couplingmentioning

confidence: 99%

“…Furthermore, the purpose of laparoscopic surgery is to quickly identify the location of the tumor and to accurately and safely extract it, thereby shortening the overall operation time. This surgical technique involves a simple operation with minimal side effects and pain, and the patient recovers rapidly; however, determining the location of the mucosal resection to remove the tumor from the gastrointestinal cavity is difficult [ 2 , 3 , 4 , 5 ]. More specifically, in laparoscopic gastrointestinal cancer (or colon cancer) surgery, malignant tumors present in the visceral cavity due to mucous membranes cannot be seen in the parietal (or cecum) of the cavity, and to remove the tumor, the location of the tumor present in the visceral (or cyclic folds) must be determined.…”

Section: Introductionmentioning

confidence: 99%

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Clip–Detector Using a Neodymium Magnet to Locate Malignant Tumors during Laparoscopic Surgery

Yoon

Kim

Chung

et al. 2022

Sensors

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During laparoscopic surgery for colorectal or gastric cancers, locating the tumor for excision is difficult owing to it being obscured by mucous membranes. Therefore, a clip can be installed around the tumor, which can be located using a sensor. Most of the clip–detectors developed thus far can only detect tumors in either the colon or stomach and require a wire to connect the clip and detector. This study designs a clip and detector that can locate a tumor in the stomach and colon. The clip contains a neodymium magnet that generates a magnetic field, and the detector includes a Colpitts oscillator that allows magnetic coupling of the clip and detector. After installing the prepared clip at the tumor location, the detector is used to locate the clip. To test the clip and detector, we conducted animal experiments, during which four clips were installed in the colon and stomach of a mini pig. We succeeded in locating the clips within 2.17 and 3.14 s in the stomach and colon, respectively, which were shorter than the detection times reported in previous studies. The demand for laparoscopic surgery and endoscopes is predicted to increase owing to this method.

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Section: Analysis Of the Magnetic Couplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Clip–Detector Using a Neodymium Magnet to Locate Malignant Tumors during Laparoscopic Surgery

Yoon

Kim

Chung

et al. 2022

Sensors

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“…These methods include the use of endoscopic clips with intraoperative portable abdominal radiographs, [ 2 , 3 ] magnetic marking clips, [ 4 ] endoscopic fluorescent clip (fluor-clip) detection method, [ 5 ] and radio-frequency identification (RFID) detection, a clip containing an RFID tag (RFID clip). [ 3 , 6 , 7 ] These studies have reported accurate results and real-time feedback. Nonetheless, their methods were time-consuming and required additional expensive equipment.…”

Section: Introductionmentioning

confidence: 97%

Clinical strategies for securing negative proximal margin in early gastric cancer

Chung,

Im,

Ryu

et al. 2023

Medicine

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Securing an appropriate proximal resection margin (PRM) is crucial for oncological safety in treating gastric cancer. This study investigated the clinicopathological characteristics of patients with incomplete PRM length of <2 cm in early gastric cancer. Clinicopathological data of 1,493 patients who underwent subtotal gastrectomy for early gastric cancer in 2012 to 2021 were retrospectively reviewed. Patients were divided into the PRM length of <2 cm and ≥2 cm groups based on pathological results. Univariate and multivariate analyses evaluated factors for incomplete PRM length. Factors related to patients with a relative PRM positive were also analyzed. The proportion of patients with a PRM length of <2 cm was 17.9% (267/1,493). Multivariate regression analysis revealed that age <50, preoperative endoscopic size of ≥3 cm, size discrepancy of ≥2 cm, and midbody tumor with a lesser curvature significantly contributed to the PRM length of <2 cm. Twenty-four patients had a relative PRM positive (24/1493, 1.6%). An incomplete PRM was the only risk factor for a positive relative PRM. Surgical treatment for early gastric cancer requires an accurate preoperative endoscopic tumor size and location evaluation. A more aggressive resection is recommended for patients with age <50, preoperative endoscopic size of ≥3 cm, size discrepancy of ≥2 cm, and midbody tumor with a lesser curvature.

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“…The Radio Frequency Identification (RFID) technology, considered the prerequisite of the Internet of Things (IoT), concerns the automatic identification of objects using radio waves. 1,2 This technology has been widely used in many fields, such as supply chains, environmental sector applications, tracking, navigation, medicine, [3][4][5][6][7] cancer diagnosis, 8 authentication, counterfeiting prevention, 9 manufacturing of sensors, and positioning systems, 10 and more careful protection of perishable foods, which require special storage conditions during transportation. 11 Advantages of the RFID technology include low energy consumption, high speed and accuracy, antiinterference capability, and longevity.…”

Section: Introductionmentioning

confidence: 99%

Using a hybrid encoding method based on the hexagonal resonators to increase the coding capacity of chipless RFID tags

Hayati

Majidifar

Sobhani

2022

Int J RF Mic Comp-Aid Eng

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A chipless RFID tag was designed using two hexagonal resonators. By defining a relation for the phases of S-parameters and rotating the resonators around their axes, a senary coding scheme was obtained at the resonant frequency.The designed resonator was able to generate six different codes using six different phase parameters at 3.03 GHz. While the conventional binary ("0" and "1") coding of ordinary tags makes minimal use of bandwidth capacity, the senary coding in the proposed design allowed the use of a larger bandwidth capacity. Requiring much fewer resonators for generating more codes, the proposed technique leads to significantly smaller tags. Using the proposed tag with two resonators, 6 2 = 36 different codes can be generated; more generally, an n-resonator tag of the proposed type can create 6 n different codes.

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An advanced RFID-based system to localize gastric and colon cancers during laparoscopic surgery

Cited by 6 publications

References 25 publications

Clip–Detector Using a Neodymium Magnet to Locate Malignant Tumors during Laparoscopic Surgery

Clip–Detector Using a Neodymium Magnet to Locate Malignant Tumors during Laparoscopic Surgery

Clinical strategies for securing negative proximal margin in early gastric cancer

Using a hybrid encoding method based on the hexagonal resonators to increase the coding capacity of chipless RFID tags

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