Virtual CT colectomy by three-dimensional imaging using multidetector-row CT for laparoscopic colorectal surgery

Matsuki, Mitsuru; Okuda, Jun; Kanazawa, Shuji; Kanamoto, Takaaki; Inada, Yuji; Tatsugami, Fuminari; Kani, Hiroyuki; Tanikake, Masato; Yoshikawa, Shushi; Narabayashi, Isamu; Lee, S. W.; Tanaka, Keitaro; Tanigawa, Nobuhiko

doi:10.1007/s00261-005-0328-2

Cited by 31 publications

(14 citation statements)

References 3 publications

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“…In addition, this technology enables future hybridization of several volumetric images, such as CT scan, real-time ultrasound, and a video image if registration points are defined. In Japan, such hybrid images are already created offline in order to assist the surgeon to navigate in laparoscopic colorectal procedure [5].…”

Section: Discussionmentioning

confidence: 99%

Seeing is believing

Szold

2005

Surg Endosc

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Endoscopic surgery became an important branch of surgery through processes new to the surgical community. In the learning process of new procedures and their implications, important factors were overlooked or taken for granted, mostly because they seemed intuitively very similar to the way we used to function prior to the minimal access era. However, we are gradually learning that this is not the case. Using long, limited instruments does affect our performance. Furthermore, the way we perceive reality, i.e., the fact that we use video cameras and monitors, affects our perception and performance greatly.In a seminal work [10] it has been demonstrated that severe errors made during laparoscopic procedures are not merely technical ones but rather reflect a critical misinterpretation of the video image. In cases in which a common bile duct injury occurred, the complication happened not because of the surgeonÕs inability to perform well technically but because of misperception of the image and incorrect decision making based on false perceptual information. As the authors remarked:''These data show that errors leading to laparoscopic bile duct injuries stem principally from misperception, not errors of skill, knowledge, or judgment. The misperception was so compelling that in most cases the surgeon did not recognize a problem. Even when irregularities were identified, corrective feedback did not occur, which is characteristic of human thinking under firmly held assumptions.''The blame, it seems, is probably on a misunderstanding most of us share: we assume that our eyes reliably interpret reality. We overlook the crucial fact that the picture we see is a video image, that it has many limitations and may lead us to perform the wrong action based on false perceptual information.The notion that a better video image may result in better endoscopic surgery is not new. Improvement in video imaging is one of the factors that enables us to perform more complex procedures than we did a decade ago. As these developments evolve, several new devices are on the verge of becoming new tools to perceive the endoscopic reality. HDTVDigital television (DTV) is based on the transmission of pure digital signals along with the reception and display of those signals on a digital monitor. DTV signals can be broadcast over the air or transmitted via cable or satellite system to a decoder that receives the signal, decodes it, and displays it. HDTV, or high-resolution digital television, is the highest resolution DTV in the new set of standards. It offers 720 or 1080 lines of resolution compared to the 525 lines people are used to in the United States. The result is a very bright, detailed picture that looks ''almost'' three-dimensional (3D).There are two main formats for HDTV: interlaced and progressive. The distinction refers to the scanning system. In interlaced format the screen shows every odd line on one scan of the screen, followed by the even lines on the subsequent scan. Since there are 30 frames shown per second, the screen shows on...

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Section: Discussionmentioning

confidence: 99%

Seeing is believing

Szold

2005

Surg Endosc

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“…Navigation surgery using fused 3D images of arteries, veins, the large intestine, and tumors obtained by CTC with IV contrast is clinically useful for overcoming this disadvantage [114,115] . This technique is helpful for deciding and confirming the surgical procedures and locating the vascular anatomy during surgery.…”

Section: Bmentioning

confidence: 99%

Minimum-invasive early diagnosis of colorectal cancer with CT colonography: techniques and clinical value

Nagata

Näppi

Cai

et al. 2008

Expert Opinion on Medical Diagnostics

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Increased screening by CTC is expected to result in a decrease in the incidence of and mortality due to CRC. Increased preoperative staging and navigation surgery by use of CTC is expected to secure an accurate choice of the precise therapeutic plan and a safer performance of surgery. Together, a comprehensive program for screening, preoperative staging, and navigation surgery based on CTC will ultimately reduce the mortality due to CRC.

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“…An advanced system has been reported 50 that handles and displays various types of images during surgery. A fused laparoscopy and 3‐D CT image was attempted in colectomy; use of the image contributed to avoiding injury to the origins of vessels, resulting in safe and rapid maneuvering 51 . A similar attempt was made in cardiac surgery to fuse a real‐time endoscopic view and a 3‐D CT image synchronously in a beating‐heart phantom 52 .…”

Section: Laparoscopic Surgery‐assisting Systemsmentioning

confidence: 99%

“…A fused laparoscopy and 3-D CT image was attempted in colectomy; use of the image contributed to avoiding injury to the origins of vessels, resulting in safe and rapid maneuvering. 51 A similar attempt was made in cardiac surgery to fuse a real-time endoscopic view and a 3-D CT image synchronously in a beating-heart phantom. 52 Although the benefits of navigation systems such as this are limited to identifying the major vessels and surrounding organs (as the organs become dislocated during the process of dissection), it appears to aid in the prevention of injury to vessels.…”

Section: Laparoscopic Surgery-assisting Systems Navigationmentioning

confidence: 99%

Computer‐based endoscopic image‐processing technology for endourology and laparoscopic surgery

2009

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Endourology and laparoscopic surgery are evolving in accordance with developments in instrumentation and progress in surgical technique. Recent advances in computer and image-processing technology have enabled novel images to be created from conventional endoscopic and laparoscopic video images. Such technology harbors the potential to advance endourology and laparoscopic surgery by adding new value and function to the endoscope. The panoramic and three-dimensional images created by computer processing are two outstanding features that can address the shortcomings of conventional endoscopy and laparoscopy, such as narrow field of view, lack of depth cue, and discontinuous information. The wide panoramic images show an anatomical 'map' of the abdominal cavity and hollow organs with high brightness and resolution, as the images are collected from video images taken in a close-up manner. To assist in laparoscopic surgery, especially in suturing, a three-dimensional movie can be obtained by enhancing movement parallax using a conventional monocular laparoscope. In tubular organs such as the prostatic urethra, reconstruction of three-dimensional structure can be achieved , implying the possibility of a liquid dynamic model for assessing local urethral resistance in urination. Computer-based processing of endoscopic images will establish new tools for endourology and laparoscopic surgery in the near future.

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Virtual CT colectomy by three-dimensional imaging using multidetector-row CT for laparoscopic colorectal surgery

Cited by 31 publications

References 3 publications

Seeing is believing

Seeing is believing

Minimum-invasive early diagnosis of colorectal cancer with CT colonography: techniques and clinical value

Computer‐based endoscopic image‐processing technology for endourology and laparoscopic surgery

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